Notes
SPI 0807.9.4
Mixtures or Compounds
Science
Tennessee SPI Objective:
Differentiate between
a mixture and a compound.
Instructions
1) First click on "View" from the top-menu bar.
2) Then click on "Slide
Show"Learning
from the drop-down menu.
Essential
3) Then use
right-arrow
button
on yourmixtures
keyboard to
Students
willthecompare
and
contrast
and
advance through this presentation.
compounds.
Essential Question(s)
How can I recognize the differences and similarities
between mixtures and a compounds?
Notes
SPI 0807.9.4
Mixtures or Compounds
Science
What is a Mixture?
 When you combine two or more substances together,
if no chemical reaction occurs, then it is called a mixture.
 Any changes you observe in a mixture are only physical
changes… no new substances are formed.
 Mixtures can be fairly easily separated back into their parts
Air
Steel
Salt Water
Blood
Milk
Mixture Examples:
What is a Compound?
 …consists of two or more different elements that are
chemically bonded in a chemical reaction to form a new substance.
 Compounds CAN NOT be easily separated back into their parts
Compound Examples:
H2O
NaCl
CO2
C6H12O6
Notes
EXAMPLE:
A Mixture
SPI 0807.9.4
Mixtures or Compounds
Science
Air
7
8
18
N
O
Ar
Nitrogen
Oxygen
Argon
14.0
16.0
39.9
Composition of Air:
78% Nitrogen, 21% Oxygen, 1% Argon and other gases
When these ingredients are mixed together
no chemical reaction occurs
Notes
SPI 0807.9.4
Mixtures or Compounds
EXAMPLE:
A Mixture
Steel
Science
26
6
Fe
Steel Ingredients:
Iron
C
98.5% Iron (Fe) and 1.5% Carbon (C)
Carbon
55.8
No chemical reaction occurs when these
ingredients are mixed together
12.0
Notes
SPI 0807.9.4
Mixtures or Compounds
EXAMPLE:
A Mixture
Salt Water
Atlantic Ocean
Salt Water
Science
Pacific Ocean
Seawater Ingredients:
3.5 % dissolved salts (mostly NaCl) and 96.5%Water (H2O)
When these ingredients are mixed together
no chemical reaction occurs
Notes
SPI 0807.9.4
Mixtures or Compounds
EXAMPLE:
AMixture
Blood
Science
Blood Ingredients:
55% Plasma (consists of 90% water, 8% Protein, 2% other)
45% Red/White blood cells and Platelets
When these ingredients are mixed together
no chemical reaction occurs
Notes
SPI 0807.9.4
Mixtures or Compounds
EXAMPLES:
A Mixture
Milk
Science
Milk Ingredients:
88% Water, 5% Carbohydrates, 3% Fat, 3% Protein, 1% Minerals
When these ingredients are mixed together
no chemical reaction occurs
SPI 0807.9.4
Mixtures or Compounds
Notes
Science
MORE EXAMPLES: Mixtures
Cement
Soup
Salad
Soup
Salad
Cement
No chemical reaction occurred when
these mixtures were formed
Notes
SPI 0807.9.4
Mixtures or Compounds
MORE EXAMPLES
Mixtures
Tea
Science
Energy Drinks
Soft Drinks
Kool-Aid Drinks
Kool-Aid
Tea
No chemical reaction occurred when
these mixtures were formed
SPI 0807.9.4
Mixtures or Compounds
Notes
Science
MORE EXAMPLES: Mixtures
Hamburgers
Hamburgers
Tacos
Pizza
Tacos
No chemical reaction occurred when
these mixtures were formed
Pizza
Notes
SPI 0807.9.4
Mixtures or Compounds
Science
NOTE: A mixture may contain one or more compounds, as long as
they do not react with each other (like Kool-Aid for example)
Kool-Aid drink
is a mixture
Kool-Aid Ingredients:
Water, sugar, flavoring agent, and a coloring agent
Kool-Aid contains two compounds:
(A) water (H2O) & (B) sugar/sucrose (C12H22O11) along with other items.
___________________
Yet these ingredients
DO NOT chemically react with each other.
Notes
SPI 0807.9.4
Mixtures or Compounds
Science
How do I know if something is a mixture or not?
Two Ways
1) Mixtures can be fairly easily taken back apart.
 Note: Look at the next slide to see ways to take mixtures apart.
2) If no chemical reaction occurred when you
combined the substances together, then it is a mixture.
 Note: Look at the next slide after that to see ways to
determine if a chemical reaction occurred.
Notes
SPI 0807.9.4
Mixtures or Compounds
Science
How to separate apart mixtures
Four examples
By hand
By filtration
By distillation
By magnetism
Notes
SPI 0807.9.4
Mixtures or Compounds
Science
How do I know if a chemical reaction occurred or not?
Remember: compounds are formed during chemical reactions. So
if there is no chemical reaction, then it IS NOT a compound
Note: Below are common indicators of chemical reactions
Explosion
Heat or Light
Color change
Smoke or Gas
Sound (sizzle, snap, crackle, pop, bang, or boom)
Fizzing or Foaming
Precipitate is formed
If you don't see one or more of these indicators,
then it probably IS NOT a chemical reaction.
.
Break
Time!
SPI 0807.9.9
Periodic Table
Break
Time!
Stand and Stretch!
 You have been sitting for a mighty long time.
 Let's take a 1 minute break to stand and stretch.
Review
Activity
SPI 0807.9.4
Mixtures or Compounds
Science
Is this a mixture or a compound?
Write a capital M if you think it is a mixture.
Write a capital C if you think it is a compound.
Milk
Mixture
Why?…The ingredients DO NOT chemically combine
Ingredients: Water, carbohydrates, fat, protein, etc.
Review
Activity
SPI 0807.9.4
Mixtures or Compounds
Science
Is this a mixture or a compound?
Write a capital M if you think it is a mixture.
Write a capital C if you think it is a compound.
Monster Energy Drink
Mixture
Why?…The ingredients DO NOT chemically combine
Ingredients: Water, caffeine, sugar, coloring, and flavor
Review
Activity
SPI 0807.9.4
Mixtures or Compounds
Science
Is this a mixture or a compound?
Write a capital M if you think it is a mixture.
Write a capital C if you think it is a compound.
C6H12O6
Compound
(Glucose)
Why? ...has 3 atoms chemically bonded together
A chemical formula with more than one capital letter is a compound.
Review
Activity
SPI 0807.9.4
Mixtures or Compounds
Science
Is this a mixture or a compound?
Write a capital M if you think it is a mixture.
Write a capital C if you think it is a compound.
Chicken Soup
Mixture
Why? …The ingredients DO NOT chemically combine
Ingredients: Water, chicken, vegetables, noodles, salt, etc.
Review
Activity
SPI 0807.9.4
Mixtures or Compounds
Science
Is this a mixture or a compound?
Write a capital M if you think it is a mixture.
Write a capital C if you think it is a compound.
CO2
Compound
(Carbon Dioxide)
Why? ...has 2 atoms chemically bonded together
A chemical formula with more than one capital letter is a compound.
Review
Activity
SPI 0807.9.4
Mixtures or Compounds
Science
Is this a mixture or a compound?
Write a capital M if you think it is a mixture.
Write a capital C if you think it is a compound.
Salt Water
Mixture
Why? …The ingredients DO NOT chemically combine
Ingredients: Water and Salt